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Catalytic Pyrolysis of Single‐Use Waste Polyethylene for the Production of Liquid Hydrocarbon Using Modified Bentonite Catalyst
Author(s) -
Rahman Mahmudur,
Shuva Zunayed Mahmud,
Rahman Md. Arifur,
Ahmed Nafees,
Sharmin Ayesha,
Laboni Aysha Akter,
Khan Mala,
Islam Md. Waliul,
AlMamun Md.,
Roy Subrata Chandra,
Saha Joyanta K.
Publication year - 2022
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202200409
Subject(s) - bentonite , catalysis , chemistry , yield (engineering) , pyrolysis , nuclear chemistry , hydrocarbon , raw material , bimetallic strip , chemical engineering , metallurgy , organic chemistry , materials science , engineering
Bentonite has been modified using H 2 SO 4 at various concentrations to alter the Si/Al ratio that is responsible for catalytic pyrolysis of waste polyethylene. The XRF analysis confirmed a gradual decrease of Al 2 O 3 content with an increasing concentration of H 2 SO 4 . The highest liquid hydrocarbon yield (87.48 %) was obtained at a Si/Al ratio of 34.24. To further activate acid‐modified bentonite, bimetals (Cu/Ni, Fe/Ni, and Co/Ni) impregnation was conducted. The catalytic performance was compared with monometals (Ru, Co, Ni, Cu, and Fe) impregnated bentonite counterparts. The Co, Ni, or Cu impregnated bentonite catalysts (with 86, 83, and 86 % yield respectively) outperformed Fe and Ru impregnated bentonite catalysts (with 68 % and 79 % yield respectively). However, bimetallic (Cu/Ni, Fe/Ni and Co/Ni) catalysts provided less amount of liquid (70–80 %). The Fe/bentonite and Fe/Ni/bentonite increased the amount of 2‐Octene, 3,7‐dimethyl‐, (Z) compared to acid‐treated bentonite and Ni/ bentonite catalysts. Moreover, Fe/Ni/bentonite has also increased the amount of 2‐Octene, 2,6‐dimethyl. The BET analysis shows that both surface area and pore diameter increased due to acid treatment resulting in an increase in the percent yield of liquid compared to raw bentonite.